The father is blood type O, Rh- (abbreviated as O-), and mother is blood type O+. They have a son of blood type O-. What is the probability that their next child is blood type B+? 25%
50%
75%
12.5%

The pharynx is the structure in the body that serves as a pathway of both air and food. how does the body make sure that food does not get into the lungs? the salivary glands secrete enzymes that pull food out of the air pathway. the small intestine pushes the air out of the digestive system. the pancreas breaks down food in the air pathway. the epiglottis closes the air pathway so that food will not enter it.

The green colored pigment in chloroplasts is? a. nitrogen b. chlorophyll c. chlorophorm d. chlorofloromethane

When fossil fuels are burned, carbon dioxide is released. how does this gas impact the environment?